Head gasket replacement instructions

You can't beat OEM gaskets as they have a zero tolerance. Other companies that make every manufacturer and every model just can't make gaskets to the tolerance of OEM gaskets. This is also true as the same motor may be in several models, so more goes into the quality. It is meanrly impossible for an aftermerket company to make better head gaksets. If you are running boost and need to really improve your head gasket seal, look into having the heads, "O-Ringed". They actually cut grooves in the block and heads that use high pressure o-rings to seal heads. Otherwise OEM or the only aftermarket to go with is Fel-Pro.